Within nowadays global markets and complexity of ICT, collaboration has gained a critical importance towards creating competitive advantages in the R&D and industrial arenas. Within this context, important efforts have been carried out within FP to support collaboration amongst the different stakeholders involved in R&D at European level.The SSAI Constituency (Software Services - Engineering, Architectures, Infrastructures) has been particularly active, implementing what has been called "concertation mechanisms". However, the way these initiatives are being implemented is being surpassed by the increasing importance of collaboration towards the future and of the complexity of technical issues related to future services. It becomes a pressing need to revise collaboration mechanisms within the SSAI Constituency overcoming critical limitations of existing ones. Furthermore, with the current financial model sustainability of these instruments is not guaranteed, nor in terms of continuation of efforts towards excellence of collaboration.HOLA! aims at supporting the EC in the creation of a critical mass of SSAI stakeholders working together in building concepts for services in the Future Internet. It will be achieved by implementing successful mechanisms for long-term collaboration and knowledge management:1.HOLA! will help the EC manage existing collaboration mechanisms such as the organisation of workshops and the ECSS website.2.HOLA! will enhance the current portfolio of collaboration mechanisms in order to overcome their main limitations.3.HOLA! will help increasing the visibility of projects in this area in and outside the SSAI Constituency, maximizing their impact.4.HOLA! will aim at raising consolidated knowledge from the European Research Projects within the SSAI area.Previous experiences from HOLA! Partners will be of great important to the fulfilment of the aim and objectives of the project.